Tawdry or tasteful, a sexy nude scene by nature titillates, or at least doesn't make you regurgitate your Raisinets. Or to put it more mathematically: Sexy people naked + doing sexy things = sexy nude scene. If any part of the equation is missing, watch out (or cover your eyes).

Yet, many a nude scene has been made that intentionally or not, lands so far on the opposite end of the spectrum from sexy that our offended eyes never want to see another naked body again.

So as a cautionary tally we hope some filmmakers will heed, we've rounded up some of the most indecent, (non-pornographic) cinematic exposures.

Is it Shmitz's drab, utilitarian apartment? Her vigorous, systematic scrubbing? A matter of untamed overgrowth? Somehow the first-time, full-frontal bathtub foreplay between the 15-year-old boy and 30-year old woman isn't as seductive as you'd expect.